[comp.sys.mac.hardware] IIsi drive

jpab+@andrew.cmu.edu (Josh N. Pritikin) (12/22/90)

I called up APS and they said that a 1/2 height drive _can_ go into
the IIsi, except that there might not be enough room for a card, if
you decided to put one in eventually.  They said it'd be a good idea
to go for a 1/3 height unless you really are sure you won't get a
card.

( Josh Pritikin jpab+@andrew.cmu.edu
( X11: the power of a Mac with the user friendliness of Unix.

kanefsky@cs.umn.edu (Steve Kanefsky) (12/23/90)

In article <QbQklWK00Vo9NVL3d9@andrew.cmu.edu> jpab+@andrew.cmu.edu (Josh N. Pritikin) writes:
>I called up APS and they said that a 1/2 height drive _can_ go into
>the IIsi, except that there might not be enough room for a card, if
>you decided to put one in eventually.  They said it'd be a good idea
>to go for a 1/3 height unless you really are sure you won't get a
>card.

Be careful, because even the low-profile drives APS is selling aren't
compatable with your IIsi, because they draw too much power.  They
may even void your warranty if you install them.  This applies to the
Quantum ProdDrive LPS-52 and the LPS-105, and the Maxtor low-profile
drives as well.  The 40 and 80 megabyte low-profile drives that Quantum
supplies to Apple *do* meet spec because of some modification that
reduces seek time, and thus power consumption (are these drives essentially 
the same as the 52 and 105 megabyte drives, with 20% of them unused to reduce 
seek time? Sort of like how a Wren Runner gets its speed boost?)

See the Page 1 article in the 12/18/90 MacWeek for more details.



-- 
Steve Kanefsky             
kanefsky@cs.umn.edu 

clouds@ccwf.cc.utexas.edu (Kathy Strong) (12/23/90)

In article <1990Dec22.172317.7737@cs.umn.edu> kanefsky@cs.umn.edu (Steve Kanefsky) writes:
>
>Be careful, because even the low-profile drives APS is selling aren't
>compatable with your IIsi, because they draw too much power.  They
>may even void your warranty if you install them.  This applies to the
>Quantum ProdDrive LPS-52 and the LPS-105, and the Maxtor low-profile
>drives as well.  The 40 and 80 megabyte low-profile drives that Quantum
>supplies to Apple *do* meet spec because of some modification that
>reduces seek time, and thus power consumption (are these drives essentially 
>the same as the 52 and 105 megabyte drives, with 20% of them unused to reduce 
>seek time? Sort of like how a Wren Runner gets its speed boost?)
>
>See the Page 1 article in the 12/18/90 MacWeek for more details.
>
I read that article carefully when I first saw it, and re-read it after
seeing your posting. The Classic and LC are mentioned as having power budgets
lower than what the Quantum draws. The IIsi is NOT mentioned. I believe it
has a higher power budget and that the low-profile Quantums (Quanta?) ARE
compatible with the IIsi--but I've been known to be wrong before.
Anyone have the FACTS?


-- 
...........................................................................
:   Kathy Strong               :  "Try our Hubble-Rita: just one shot,     :
:  (Clouds moving slowly)      :   and everything's blurry"                :
:   clouds@ccwf.cc.utexas.edu  :                           --El Arroyo     :
:..........................................................................: